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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,765 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringCarouge GeR.G. Riedweg et Gendre SA
R.G. Riedweg et Gendre SA Logo
Verified· 3 sourcesTrust Score
Summary

About the company

R.G. Riedweg et Gendre SA is an engineering firm specialising in building services and technical building design. The company provides services in CVSE, electrical engineering, energy, safety, security and construction management.

AI-generated
Offering

Products & services

Industry:Technical Consulting & Engineering
✓ Offered6
Advice
Advice and analyses for heating, ventilation, air conditioning, sanitary, electrical, safety (AEAI), lighting, overall security, telecommunications and multimedia; support from the pre-design stage, construction-site monitoring and supervision of the work.
Interdisciplinary coordination
Advice and analyses for all building techniques; coordination with specialized engineers and trades, definition of an overall CVSE engineering solution, management of technical, energy-related and economic objectives.
Management
Technical and administrative project management; steering schedules, budgets, resources and tasks, with monitoring of technical performance, costs, quality and deadlines.
Technical expert reports
Neutral technical expert reports in cases of dispute; analysis of defects, anomalies or faulty workmanship, clarification of responsibilities, reference to the legal bases and standards, and measures to be taken.
Audits
Building and technical installations audits; observation and analysis of the existing condition, identification of what can be kept, improved or replaced, assessment of technical and financial feasibility.
AMO (Client’s representative assistance)
Assistance to the client for project management and delivery; representation to consultants and contractors, protection of interests, advice, availability and support for operations.
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4.4/5

R.G. Riedweg et Gendre SA

Trust & reputation

ranQ Trust Score of R.G. Riedweg et Gendre SA: 4.4 out of 5.0

Trust Score4.4/ 5.0

Very high

x

Data basis 96% · As of October 2026

R.G. Riedweg et Gendre SA scores 71.3 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.78.124%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.49.510%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.78.08%
R.G. Riedweg et Gendre SA scores 95.0 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.100.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.82.07%
R.G. Riedweg et Gendre SA scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).85.022%
R.G. Riedweg et Gendre SA scores 74.3 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.74.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

R.G. Riedweg et Gendre SA reaches a ranQ Trust Score of 4.4 out of 5.0 — rated «Very high». The rating draws, among other things, on 5.0 out of 5 stars from 6 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 6 reviews across all connected sources

Sources
GGoogle56
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Avenue de la Praille 31
1227 Carouge Ge

At a glance

Legal form
Corporation
UID
CHE-103.498.714
Founded
1985 · 41 years
Last commercial register change
August 12, 2026
Employees
21 to 50
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.95.03%
    • Full methodology

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